Machine for forming and setting fasteners for papers and other materials



Jan; 1, 1924 C. P. SIBLEY MACHINE FOR FORMING AND SETTING FASTENERS FOR PAPERS AND OTHER MATERIALS Filed Nov. 1, 1922 2 Sheets-Sheet 1 Jan, 1,1924. 1,479,680 C. P. SIBLEY MACHINE FOR FORMING AND SETTING FASTENERS FOR PAPERS AND OTHER MATERIALS Filed Nov. 1. 1922 2 Sheets-Sheet 2 Patented Jan. 1, 1924.

time

sic

GEDRIC P. SIBLEY, OF DETROIT, IVIICHIGAN.

IVIACHINE FOEFORMING AND SETTING FASTENERS FOR PArnas AND OTHER MATERIALS.

Application filed November 1, 1922.

To all whom itmay concern Be it known that I, GEDRIO P. SIBLEY, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented a certain new and useful Improvement in Machines for Forming and Setting Fasteners for Papers and Other Materials, of which the following is a full, clear, and exact description.

The object of this invention is to provide a machine for forming and setting fasteners for papers and other materials, and particularly adapted to forming and setting fasteners of substantially the type shown in ray-Patent No. 1,397,787, granted November 22, 1921, and the machine is in some respects similar to the well known Challenge presses represented in the patents of Edward L. Sibley No. 858,224, granted February 22, 1887, and No. 691,012, granted January 14, 1902. I v

The machine of this invention is distinguished from the machines of the last two patents above mentioned by the fact, among others, that it is adapted to form as well as to set fasteners, whereas the machines of the patents mentioned are designed for setting and removing fasteners merely.

The invention consists in a machine for setting fasteners for papers and other materials, comprising a base, mounted in which is an anvil movable longitudinally therein and containing a pin arranged for sliding engagement with said anvil and provided with an extension which works in an aperture in said anvil and through which said pin may be projected, a plunger carried by and slidable in an arm rising from said base and provided with a relatively movable punch member, and a cam arranged for operative engagement with said plunger and punch member, whereby a fastener may be formed and set by the cooperation of said anvil. pin, plunger and punch member; the

arention being applicable alike to a handfed machine and an automatically fed machine, as I will proceed now to explainand finally claim.

In the accompanying drawings illustrating the invention, in'the several figures of which like parts are similarly designated, Figure 1 is a side elevation, with some parts in central vertical section, showing my machine equipped for hand feed. Fig. 2 is a horizontal section taken in the plane of Serial No. 598,400.

line 2-2, Fig. 1, and looking in the direction of the arrows. Fig. 3 is a perspective View of the pin. Fig. 4 is a perspective view of the punch member. Fig. 5 is a side elevation of my machine equipped for automatic feed of the fastener blanks. Fig. 6 is a horizontal section taken in the plane of line 6-6 of F ig; 5, and looking in the direction of the arrows. Fig. 7' is 'a plan view of a strip of fastener blanks of a type suit able for use in my machine. Figs. 8, 9 and 10 show, respectively, the three setting stages, namely, forming, collapsing and clinching, of a fastenerasaccomplished by my'machine.

Referring particularly to Figs. 1' to ,4, the machine comprises a base 1, provided with a boss 2 bored as at 3 and 4 to form a two-diameter recess adapted to receive an anvil. 5, maintained in proper longitudinal sliding alinement within the boss 2 by means of a pin and groove connection 5 (see Fig. 2). This anvil is provided with a shoulder 6 and a guide extension 7, the shoulder 6 abutting against a lip 8 formed by the small'bore 4, and the anvil being held normally in such position by means of a stiff spring 9, having its lower end bearing against a plate 10 secured to the base, as by screws 11, or other appropriate fasteningdevices.

The anvil 5 has a central bore 12 to re ceive a pin 13 which is provided with a reduced portion 14=and an extension 15 preferably flattened as shown, this flattened extension fitting in and adapted for sliding engagement with a complementally shaped aperture 16 in the face or top of the anvil. The pin 13 is normally forced downward by alight spring 17, and its downward movement is limited by the plate 10 with which the lower nd of the pin normally contacts, The anvil and pin are provided with a snap detent means comprising a transverse bore 18 in the pin inwhich are mounted two, balls 19 normally forced apart by an interposed spring 20, and these balls are adapted for cooperation with a complemental internal circumferential groove or seat 21 in the extension 7 of the anvil, as will be hereinafter pointed out. The balls 19 are prevented from escaping from the bore 18 by means of the lower portion of the extension 7 which is counterbored, as at 22, to. form a seat for the balls, the counterbore being tapered inwardly at its upper end, as at 23,-

r v v y W J and flattened portion 10 oftlie pin is will to easily accomplish -the forcing of the balls into the bore 18 against the pressure cit the spring 20 when relative movement between the anvil and pin takes place, as will be hereinafter explained. Obviously other forms of snap detent may be substituted for the form shown and described.

Downward movement of the anvil is limited by means of a stop ring 24: normally embracing; the lower end of the pin 13 and chainfered at. 25 to permit easy centering oi": the pin therein.

The upper face of the anvil is slightly dished, as at 26, tor-a purpose later ex- -p'lained, and is provided with a resilient tastener-positioning member 27 having an enlt'ension '28, which extension a c ts as a spacing member between the anvil and the plunger next described. lhe positioning member is centered upon the upper face of the anvil by means of pins :29, which also act as steps for accomplishing the proper a'osit-i'oning of a "fastener blank upon the anvil.

fiising from the base 3. is an arm provided with a socket 31 in which canted a plunger shouldered as d forced normally upward by a spring 3e interposed between the end 35 ot the socket and the shoulder 33. Within this plunger is mounted a punch member 36 having a lower end 36 of reduced diameter ccoperating with a bore 32 of the plunger and arranged for free sliding movement within the plunger,

hereinafter described.

The arm 30 carries bearing members 37 between which is journaled a cam member 88 having a pair of spaced cams '89 for accomplishing the forming operation of the machine and a concentric cam actuated therewith, and a cam ll for per1= rming' the fastener setting operation of the machine, these cams being formed preferably integrally with a lever 42 and being journaled upon a pin 43.

The operation of this form of the invention is substantially as follows lVhen it is desired to "fasten together two or more pieces of paper or other material, a fastener blank, such tor example as one section oi"? the multiple blank shown in Fig. 10, is positioned upon the anvil by slipping it between the resilient positioning member 27 and the upper face of the anvil, until it abuts against the stop pins 29. Then the papers or other material to be fastened together are positioned upon the anvil, and tie lever 12 is depressed baclrwardly, or to the right, lool-; ing at Fig. 1. This causes the spaced cams 39 to act upon the upper end or" the plunger 32 and force the plunger down into contact with the paper, and further movement of the lever-42in the same direction will cause the anvil 5 to be depressed against the spring 9. As the anvil is thus depressed the reduced revenge be projected through the aperture 16 in the anvil, and, coming in contact with the tastener blank, will force the blank through the paper or other material and into the bore '32 of the plunger, the punch member 36 being thereby prevented from descending with the plunger and permitting the fastener blank to be formed into a substantially tubular shank (as shown in Fig. 8) within the bore 32 or" the plunger. The spacing member or extension 28 prevents blBD. of the blank during the forming operation by allowing an initial small clearance betweenthe flattened extension 15 and the edge oi the bore 32 into which the blankis therefore easily bent. Inasmuch as the cam is cancentric with the center otosci ll-ationot the cams 39', a space will 'be left between th'e'top of the punch member 36 and the lace of the c-am lO as the plunger 32 descends, and it is in-tothis' space that thepunch Inber moves as the forming operation takes place upon "the fastener. As the anvil 5 ClE'SCEI IdS- the balls 19 will'be 'lo'reed into tie :bere 1'8:b'y ued the action of the tap 23, and descent of t ie anvil will 0 g 'the eirc tial groove 21 into alin'ement with the bore 18, whereupon the balls will snap OLltOl the bore and into engagement with the groove. Continued depression of the anvil will cause the balls to be forced out of the'gro'ove and back into the bore 18 again, while the anvil completes its descent to the point where it is stopped by the ring 2%. p

The operation of forming the fastener being completed at this point, the lever a2 is raised. This permits the spring 9 to force the anvil upward to its normal position, but the pin 13 instead of remaining in its normal downward position, as shown, will rise with the anvil because of the engagement of the balls 19 with the groove 21 as the anvil upper face or" the anvil. It will be obvious that as the plunger 82 rises under the inlluence of its spring- 34c the'lev'er l2 and cams 3S) and 40 are returned to normal position, the reduced portion 36 oil, the punch member 36 w'ill'eje'ct the tormed fastener from the bore 32 of the plunger, the retaining action of the positioning member 26 cocperat ing with the action (If the punch member 36 to hold the fastener in proper position upon the an thispositioning; being aided also bythe ementioned proj ection ofthe 1'5 of the pin extendng into the formed fastener. The setot the iastener must now be ac- =l' ied. This is done by moving the iiattenec portion lilll 1). This movement brings the cam 41 into play, and inasmuch as this cam in addition to acting upon the top of the plunger 32 acts also upon the top of thepunch member 36, the plunger and punch member are moved downward simultaneously, presenting an unbroken setting surface on the lower end of the plunger to the top of the formed fastener. The continued downward movement of the plunger will deform the fastener (as shown in Fig. 9), and will finally fiatten it out to full clinched or set position (as shown in Fig. 10), the anvil in the meantime remaining in its upward position by virtue of the fact that its spring 9 is, of such strength as to withstand that amount of pressure necessary to deform and clinch or set the fastener. Here again the slight projection of the flattened portion 15 of the pin comes into play, in that when the fastener is being collapsed this projection of the flattened portion inside the fastener prevents its collapsing inwardly. Here also the dishing of the face of the anvil surrounding the fiattened portion of the pin is operative in precluding spreading of the fastener adjacent to the flattened portion as setting pressure is applied. During this setting or clinching operation the spring retained anvil will act as a cushion, thereby insuring even compres sion upon the fastener.

Referring to Figs. 5 and 6 of the drawings, wherein an automatic device for feeding a strip of fastener blanks such as illustrated in Fig. 7, is shown, it" is to be'un derstood that all of the parts of the machine relating essentially to the forming and set ting of the fasteners are identical with those shown in Fig. l, excepting in so far as their proportions and formation are modified to accommodate the automatic feed mechanism.

This automatic feed mechanism comprises a .plate 44 adapted to be mounted upon the top of the anvil 5 and having side flanges orguidc-s 45 and a downturned lip 46, and above this plate 44 and spaced from it by washers 47 is another plate 48 corresponding in essential features with the resilient positioning member 26 of the hand feed machine previously described, but having rearwardly extending arms 49. Screws 5() pass through the plate 48, washers 47 and plate 44 to hold the plates 44 and 48 in proper relative arrangement upon the anvil. The plates 44 and 48 together constitute a guide for a strip of fastener blanks. As will be seen by reference to Fig. 6, the plate 48 isnot as wide as the plate 44, thereby providing slots or guideways 51 between the edges of the plate 48 and the side flanges 45 of plate 44, and in these guideways 51 slide feed dogs or arms 52 extending rearwardly from the anvil and pivoted by means of slotted openings 53 in their extremities upon a pin 54 mounted between and carried by the spaced arms 55 which take the'place of the arm. 30 of the form of the machine shown in Figs. 1 and 2, the pin 54 being provided with a sleeve 56 adapted to space the dogs 52 in proper alinement with the guideways 51. These dogs are normally forced forwardly and toward the anvil by means of springs 57, the free ends 58 of which abut against lugs 59 formed on the arms 55.

The operation of this form of the inVention in so far as the forming and'setting of the fastener are'concerned, is identical'with the hereinabove described operation of the form of the invention shown in Figs. 1 and 2, and in order that the operation of the auto matic feed mechanism maybe understood,

it will be necessary only to describe the operation of same in connection with the forming and setting operations of the other parts generally. J

The strip of fastener blanks shown in Fig. 7 is fed into the machine from the back between the arms 55 and resting upon the in c-lined surface 60, and its leading end is inserted between the lip 46, and the arms 49 so that it is fed between the plates-44 and 48 to the anvil. The feed arms 52 are then re tracted and their leading ends positioned be hind the edges 61 of a fastener blank of the strip, thus forcing the leading blank of the strip forward upon the anvil until its leading edge abuts against the washers 47, thereby being held in proper relative position to the forming and setting mechanism. Now, upon the insertion of the material upon which the fastener is to be set, and the depression of the lever 42,for the forming operation, the descent of the anvil and the projec-tion therethrough of the flattened portion 15 of the pin 13 will shear off the fastener blank which is informing position from the strip of blanks, and will form it into a fastener in themanner previously described. In this connection the extension 62 ofthe plate 48 will function, in. that as the plunger descends its descent will be limited by the extension 62, and as the flattened portion 15 of the pin 13 rises, the'shearing operation of the portion 15 acting in conjunction with the extension 62 and the plungerand the bore 32 thereof will sever the blank from the strip of blanks and will form it into a fastener as hereinbefore described, the slight space between the blank being formed and the plunger, caused by the projection 62, serving to prevent cutting in half of the blank and facilitatin its bendin within the bore 32 into fastener form.

As the plunger descends and forms the fastener from the blank, the anvil also descends, as previously described, and the pressure between the plunger and anvil and the continued interposition of the fastener being formed between the washers 47 and the remainder of the fastener blank will prevent lit) iao

a new blank from coming forward into position for forming, and while the anvil descends the feed arms 52 will drop bacl' bebind the next adjacent fastener blank for the reason that it is impossible for these arms to move forward anyv farther than is allowed by the length of the slot 53. Now, when the fastener forming operation is completed, and the anvil rises, the springs 5'? will have a tendency to, force the next blank into forming position and to force the already formed fastener out of setting position, but this is prevented-by reason of the fact that the flattened extension 15 of the pin 13 remains projecting above the surface of the anvil and acts as-a stop to prevent forward movement of the strip offastener'blanks the arms 52 in consequence being forced back by the strip of blanks as is permitted by the slots 53. After the setting operation has been accomplished as described in connection with the description of the form of the invention of Fi 1, and the material with the fastener set thereon is removed, the springs 57 will advance the arms 52 so as to position a fresh fastener blank beneath the plunger.

As shown and described, the machine is adapted for forming and setting a fastener having a fiat shank, but it obvious that by changing the form of the blank and the shape of tire extension 15 of the pin 13, its corresponding aperture in the anvil, other shapes of fasteners may be formed and set'equally well. That is, by complementally changing the shapes of the forming members of the machine fasteners hav ing cylindrical, polygonal or other shaped shanks may be formed and set with my machine.

It is to be understood that although I have herein shown and described a particular embodiment of my invention and have mentioned changes which may be made therein, 1 do not consider my invention as limited to this disclosure, but contemplate the making of various other changes in con struction nd arrangement of parts without departing from the spirit of the invention or the scope of the following claims.

l i hat I claim is i. in a machine for forming and setting iilS IFiGl'S for pa -ere and other materials, a base, an anvil. mounted for longitudinal sliding movement therein, means for limiting such inovenent, a spring normallly forcing; a ,vil outwardly with res icfct to pin slidable longitudinally of rd means for locking said anvil nst ,elative sliding movement. ine forming and setting apers and other materials, a arranged for limited sliding hin said base, means for normally projectin said anvil out'rarely with respect to said base, a pin slidable within said a]; ii and pro *ided with an o: i 7 means defining an aperture in the face of said anvil wi h which aperture said eaten sion cooperates, means for normally retaining said pin with its extension within the plane of the face of said anvil, a plunger provided with a bore and arranged for operative movement toward said anvil, and means for effecting the movement said plunger, whereby when a fastenor blank positioned on said anvil and said plunger moved into operative engage inent therewith said extension will. be project d by relative movement between said pin and anvil and by cooperation with the bore of said plunger will shape said blank into fastener i'orm.

3. in a machine for fori'ning-and setting fasteners for papers and other materials, base, an'anvil mounted for limited resilient sliding movement therein and provided with an apertured face, a pin sli-dable within said anvil and having an extension cooperating with said apeure, a centra ly bored plunger movable for cooperative engagement with said anvil, means for imparting movement to said plunger whereby relative movement between said anvil and pin is-attained and said extension projected through said aperture, and means for retaining said extension in partly projected position with respect to the face of said anvil.

l. A machine for forming and setting fasteners for papers and other materials, as claimed in clain il, in which the partly projected position of said extension is maintain ed by virtue of cooperating means in said pin-and anvil.

5. A machine for forming and setting fasteners for )apers and other materials, as claimed. in claim 8, in which the partly projected position of said extension is temporarily maintained by virtue of snap-detent means cooperating between said pin and anvil.

6. A machine for forming anc setting fasteners for papers and ot er materials, as claimed in claim 3, in which the partly projected position of said cXtens-on is temporarily maintained by virtue of a ball and groove snap-detent means cooperating between said pin and anvil.

7. A machine for for-mi .ttino fas toners for papers and other materials, as claimed in claim 3, in which the partly projected position o said extension is lQillPO- rarily maintained by means of a ing pressed ball carried by said pinjani. engaging a seat in sai 1 anvil.

8. In a machine for tl ormings; and setting fasteners for papers and other materials, a base, an anvil mounted for longitudinal sliding movementtherein, means for limiting such movement, a spring normally forcing said anvil outwardly with respect loo ' to said base, a pin slidable lon itudinally within said anvil, a spring normaily forcing said pin inwardly with respect to said base, and cooperating means on said pin and anvil for locking same against relative movement against the. pressure of said pin-- forcing spring.

9. In a machine for forming and setting fasteners for papers and other materials, a base bored to receive a longitudinally slid-. ing anvil, a spring normally forcing said anvil outward with respect to said base, means for limiting the outward movement of said anvil against the action of said spring, means adapted to move said anvil inwardly against the. pressure of said spring, means for limiting such inward movement, a pin slidable' longitudinally witiin said anvil, a spring normally forcing said pin inwardly with respect to said base, and a spring detent mechanism cooperating between said pin and anvil for locking said pin and anvil against relative sliding movement against the action of said pin-forcing spring.

10. In a machine for forming and setting fasteners for papers and other materials, a base bored to receive a longitudinally sliding anvil, a shoulder on said anvil, a lip in said bore, a spring abutting against said shoulder and normally forcing said shoulder against. said lip, and a stop ring in said base, said lip and stop ring limiting the outward and inward movements of said anvil respectively.

ll. In a machine for forming and set-ting fasteners for papers and other materials, a base bored to receive a longitudinally sliding anvil, a guide extension on said anvil termi- 'nating outwardly in a shoulder, a lip in the bore of said base, a spring surrounding said extension and normally forcing said shoulder outwardly against said. lip, means for moving said anvil inwardly against the pressure of said spring, a stop ring adapted to cooperate with the inner end of said ex tension to limit the inward movement of said anvil. and a pin slidable within said anvil, said stop ring adapted to center said pin.

12. In a machine for forming and setting fasteners for papers and other materials, an apertured anvil adapted to receive a fastener blank, a pin a portion of which is adapted to be projected through the aperture of said anvil, a bored plunger mounted for slid ing movement toward said anvil and having a punch member mounted for relative sliding movement within said bore, means for moving said plunger into operative engagement with said fastener blank to project said extension and form a fastener from said blank, and means for moving said plunger and with it said punch member to set said fastener.

13. In a machine for forming and setting fasteners for papers and other materials, an apertured anvil adapted to receive a fastener blank, a pin a portion of which is adapted to be projected through the aperture of said anvil, a bored plunger mounted for sliding movement toward said anvil and having a punch member mounted for relative sliding movement within said bore, means for moving said plunger into operative engagement with said fastener blank to project said extension and form a fastener from said blank, and means for moving said plunger and with it said punch member to set said fastener, said anvil during the operation of setting the fastener acting as a cushion.

14. In a machine for forming and setting fasteners for papers and other materials, an anvil, adapted to receive a fastener blank, and a positioning member carried by said anvil and adapted to hold the blank in forming and setting position thereon during the operation of the machine.

15. In a machine for forming and setting fasteners for papers and other materials, an anvil, a plunger, means for moving said plunger toward said anvil, a positioning member carried by said anvil and arranged to hold a fastener blank in predetermined fastener forming and setting position thereon, said positioning member provided with a spacing member adapted to prevent direct contact between said plunger and blank and possible cutting of the blank during the fastener forming movement of the plunger.

16. In a machine for forming and setting fasteners for papers and other materials, an anvil and a plunger adapted by separate op erations to form and set a fastener between them, and a doublecam adapted to impart motion to said plunger to effect said operations;

17 In a machine for forming and setting fasteners for papers and other materials, an anvil, aplunger movable relative thereto, a punch member carried by and movable relative to said plunger, a cam adapted to impart motion to said plunger independently of said punch member, a cam adapted to impart motion to said plunger and punch member simultaneously, a common pivot for said cams, and a cam face concentric with said pivot and upon which said punch member may ride during the action of the plunger operating cam.

18. In a machine for forming and setting fasteners for papers and other materials, a movable anvil, a plunger, means for actuating said plunger to move said anvil, a guide carried by said anvil and adapted to receive and guide a plurality of fastener blanks, and a spring-actuated blank feeding arm carried by a stationary part of said machine and directly engaging said blanks and adapted upon relative movement between aid mechanism and anvil to automatically teed fastener blanks between said anvil and plun er.

19; In a machine for forming and setting fasteners for papers and other materials, a movable anvil, apflunger, means for actuating'said plunger to move said anvil, a guide carried by said anvil and arranged to receive and guide. a strip of fastener blanks, a feed arm pivoted to a stationary part of the machine and arranged for limited sliding movement on its pivot, and means for imparting sliding movement to said arm upon movement of said anvil.

20. in a machine for "forming and setting fasteners for papers and other materials, a movable anvil, a plunger, means for actuating said plunger to move said anvil, a guide carried by said anvil and arranged o receive and guide a strip of fastener blanks, a feed arm pivoted to a stationary part otthe machine and arranged for limited sliding movement on its pivot, and a spring connected With said arm and bearing against the stationary part of the machine for imparting neraeeo sliding movement to said arm upon move-- ment of said anvil.

21. In a machine for forming and setting fasteners for papers and other materials, a movable anvil, a plunger, means for actuating said plunger to move said anvil, a guide carried by said anvil and arranged toreceive and guide a strip of fastener blanks, a pair 01 teed arms pivoted to a stationary part or" the machi e and slotted for limited sliding movement upon their pivots, and springs ing. against the stationary part of the mat chine, said arms provided with means for successively engaging separate fastener blanks oi said strip upon relative movement between them andsaid anvil.

In testimony whereof I have hereunto set my hand this thirtieth day of October, A. D. 1922.

CEDRIC P. SIBLEY.

connected with said arms and bear- 

